An excellent range of Black Agate With Tree Of Life Ball. The Tree of Life symbol represents our personal development, uniqueness and individual beauty. Just as the branches of a tree strengthen and grow upwards to the sky, we too grow stronger, striving for greater knowledge, wisdom and new experiences as we move through life. Black Agate, like all black stones, is a grounding and protective crystal. It gives a calming peace that helps those during a period of bereavement. Black Agate gives inner strength to move on and is also very helpful in keeping the peace in stressful households.